The stand-alone mod S.T.A.L.K.E.R. Anomaly aims to be the most stable and customizable experience for fans of the S.T.A.L.K.E.R. games. It's powered by the Monolith 64-bit engine, a custom fork of the X-Ray engine.
Just a piece of code which allows you to play as Major Degtyarev. Error free
Yay, military stalker forever
Why his head so big
FOV obviously
For people who were waiting for years to play as Degtyarev instead of generic stalker loooking same as other stalkers :)